By Ailsa / Last Updated January 10, 2020

The Scenario

My computer is Lenovo G50 with Windows 10. It got stuck in boot loop after my windows updated yesterday. It has a black screen with an error message saying: Install Windows. Windows could not complete the installation. To install Windows on this computer, restart the installation. When pressing OK or X boots and repeats the error message. I was able to get into Windows 10 Boot menu by pressing reset button. I tried to start in Safe Mode, but an error occurred: Can’t install Windows in Safe Mode. Any help would be appreciated, thanks.

How to: fix Lenovo stuck in boot loop problem

Except for this situation mentioned in the Scenario, you may encounter other Lenovo problems like stuck on boot menu or black screen; you getting a Preparing Automatic Repair error message; or getting stuck while diagnosing; or stuck in a blue screen; even Lenovo laptop randomly restarts, etc. In this article, you can refer to the following 6 ways to fix Lenovo laptop/desktop boot loop problem.

♦ Way 1: Unplug all external devices and perform a hard reset
♦ Way 2: Run Lenovo Diagnostics tools
♦ Way 3: Reset the BIOS to default settings
♦ Way 4: Automatic Repair
♦ Way 5: Repair your boot sector or BCD
♦ Way 6: Reset your PC to factory settings

Way 1: Unplug all external devices and perform a hard reset

Some hardware may be interfering with the Windows normal boot process. please unplug all devices from your computer, including Printers, Scanners, Media Card Readers, Small Media cradles (iPod, PDA, MP3 player, etc.), Digital Cameras and Video Recorders, USB storage devices, CDs or DVDs.

Then take out the battery for a few seconds if you're using a laptop, then plug it in, and reboot the computer. If you can't take out your battery from the computer, you can press the Power key for about 10 seconds to force a shut down, then press the SHIFT key when turn it on, it works to boot. But this way is not recommended due to the hard reboot operation may cause data loss.

Way 2: Run Lenovo Diagnostics tools

Lenovo has built-in diagnostics tools named Lenovo Solutions Center, which is a test and troubleshooting tool developed to scan your computer regularly looking for issues and helps you to resolve these issues in Lenovo computers running on Windows 7, 8, 8.1, and 10 OS.

It will scan your hardware, updated software, and learn from hints and tips to achieve maximum performance for your system. You could press F12/F11/F10/F9/F2/F1 while booting to enter boot menu, find Lenovo Diagnostics (built-in Lenovo Solution Center) to test your hard drive, and other things. If the hard drive has some issues, fix it. Otherwise, maybe you have to change a new hard drive for your Lenovo computer.

Way 3: Reset the BIOS to default settings

If you set the first boot device is other device not the system hard drive, the computer will stuck in boot loop problem. To reset the BIOS, you have to restart your Lenovo computer, tap F2 or other key to enter BIOS, then follow the tips to load default settings. Save your changes and Press ESC to exit the BIOS.

Way 4: Automatic Repair

Automatic Repair will automatically repair your operating system issues; you could follow these steps to solve:

1. Boot from Windows 7/8/10 installation disc and press any key to continue.

2. Then navigate to Repair your computer -> Troubleshoot-> Advanced options -> Automatic Repair.

3. Wait for the result of the automatic repair and follow the instructions to solve Lenovo stuck in boot loop.

Way 5: Repair your boot sector or BCD

The boot sector or BCD file is corrupted or missing will cause the Lenovo laptop stuck in boot loop problem. There are two ways to fix: command prompt and AOMEI Partition Assistant Standard.

Command Prompt – Bootrec.exe tool

If you have a Windows installation disc, you could do this:

1. Please boot from the Windows 7/8/10 installation disc,

2. Then go Repair your computer -> Troubleshoot ->Advanced options -> Command Prompt.

3. Input the following commands and execute one by one:

  • BOOTREC /FIXMBR

  • BOOTREC /FIXBOOT

  • BOOTREC /SCANOS

  • BOOTREC /REBUILDBCD

BOOTREC Tool

AOMEI Partition Assistant Standard

If you do not have a Windows 7/8/10 installation disc. AOMEI Partition Assistant Standard will help you. It is a freeware for you to manage your disk partitions in Windows XP/Vista/7/8/8.1/10. With it, you can create a bootable device, which can help you fix boot sector and BCD file easily.

Free download it on a working computer and refer to the following instruction.

1. Connect your USB flash drive to the normal computer, install and open the software. Then, choose Make Bootable Media.

Make Bootable Media

2. Choose USB Boot Device to create a bootable USB. Click Proceed and follow the next pro

Choose Usb Drive

3. Then boot your Lenovo PC which trump in boot loop issue from the bootable media.

4. Open AOMEI Partition Assistant Standard on the desktop, right-click the system disk you want to repair and choose Rebuild MBR.

Rebuild System Disk Mbr

5. Choose the MBR type for your current Windows operating system. Hit OK.

Choose Mbr Type

6. Click Apply and Proceed to commit the operation.

The Lenovo stuck in boot loop problem should be solved. Besides, you could check errors for your hard drive with Surface Test or Check Partition function with this freeware, then fix it. Or use CHKDSK to check errors. By the way, you could upgrade to the advanced edition of the software - AOMEI Partition Assistant Professional is capable of cloning MBR disk to GPT, converting dynamic disk into basic without data loss and so on.

Way 6: Reset your PC to factory settings

If all the above ways does not work, reset your PC to factory settings or reinstall the Windows operating system might be the ultimate way to fix Lenovo stuck in boot loop issue, here it is (reset PC to factory settings):

1. Click Power button, and then hit F9 or other key simultaneously to go Automatic Repair program.

2. Choose Advanced Options -> Troubleshoot -> Reset this PC.

The steps to reinstall Windows operating system:

1. Restart your PC. Press F2, F9, F10, Del or Escto enter your BIOS to set your PC boot from the installation USB stick or DVD drive. Save the changes of the settings.

2. Insert your installation USB stick or DVD drive and restart your PC. Now your PC should now boot into the Windows Setup program.

3. Choose language, time and currency format and input method, and click Next.

4. Press Install Now button. Then follow the steps to reinstall operating system.

After resetting this PC or reinstalling OS, the Lenovo stuck in boot loop problem will be solved.